JS are very economical in the food department.. They are small dogs that look much bigger due to the thickness of their coats.
They are also grazing dogs, they prefer to eat small amounts frequently rather than gulp down a meal in one sitting.
My 2 always have food and water available 24/7 .
Mine are fed Purina Supercoat Adult Small Breed. As pups, they had Purina Supercoat Puppy ( just look for the JS on the packet )..
Other food items can be fed as occasional treats...
Interesting all mine and the ones I know guzzle their supper down!